I am declaring a Map as follows:

 exampleMap:Map<string, string[]>;
 exampleMap['A']=['X,'XX'],

I am getting the following errror and dont know what it means nor how to fix it.

error TS7052: Element implicitly has an 'any' type because type 'Map<string, string[]>' has no index signature. Did you mean to call 'exampleMap.get'?

Any tips/suggestions on how to fix this?